Question

我想获得其元素的当前价格已经改变了。我只能改变第一个元素的价格，而不是其他元素的价格请帮助我从数量的下拉菜单中获取所选元素的数量。

 <script type="text/javascript"> //quantity retrival
    $(document).ready(function() {

    $('.quantityx').change(function(){
        alert("message");

        var tot =$('#pricexx').val()* this.value;
         alert(this.parent.find('input[name=pricexx]').val());

         });

    });
    </script>

    <table id="mytable">

                    <%
                        int i = 0;
                        while (it.hasNext()) {
                            i++;
                            Product_List PL = (Product_List) it.next();

                            list.add("" + PL.getProduct_id());
                            String order = list.toString();
                            session.setAttribute("orders", order);
                    %><tr class="row">



                        <td class="delete">
                            <div class="centererer">
                                <form action="PDelete" method="get">
                                    <input type="hidden" name="p_id" value="<%=PL.getProduct_id()%>"
                                        id="Product_id" /> <input type="submit" class="close">
                                </form>
                            </div>
                        </td>
                        <td class="image"><img src="<%=PL.getImage()%>" width="86"
                            height="86" /></td>
                        <td class="name"><%=PL.getBrand()%> <%=PL.getDetail()%></td>
                        <td class="size"><%=PL.getCloth_size()%></td>

                        <td class="price">&#8377;<input name="pricexx" type="text" disabled="disabled" value="<%=PL.getPrice()%>"></td>
                        <td class="quauntity">
                        <select class="quantityx">
                <option value="1" selected="selected">1</option>
                <option value="2">2</option>
                <option value="3">3</option>
                <option value="4">4</option>
                <option value="5">5</option>
            </select>


                            </td>
                        <%!int totalprice, netprice = 0,quant=1;%>
                        <%
                            totalprice = quant * PL.getPrice();
                        %>
                        <%
                            netprice = totalprice + netprice;
                        %>

                        <td class="price">&#8377;<input id="tp" type="text" disabled="disabled" value="<%=totalprice%>"></td>

                    </tr>
                    <%
                        }
                    %>
                </table>
                <!--         -->
                <input type="hidden" value="<%=list.toString()%>" name="array" /> <br />
                <br />
                <br />
                <br />
                <table>
                    <tr>
                        <!-- <td  class="size"></td> -->
                        <td class="total">TOTAL <span class="pricex">&#8377;<%=netprice%></span></td>


                    </tr>
                </table>

Answer 1

您的选择器无法获取当前input[name=pricexx]。你应该这样做

var input = $(this).parent().parent().find('input[name=pricexx]');
var tot = input.val() * this.value;

从for循环生成的td标签中获取输入标签的值

1 个答案: